F-Sport Wind/Rain Noise on side windows

I have a 2013 F-Sport AWD that has double paned on the front side windows, and just single on the back. I've noticed what appears to be a higher-than-expected amount of wind noise sometimes (not all) when traveling around 60 mph. More concerning is the rain/tapping/dropping sound on the rear side windows that has recently become very noticeable. Is this something anyone has complained about and actually had dual-paned glass installed in the rear on Lexus?